some calculus help

[Burnboy]

whats

100-.25x^2=a(x-40)^2

 

[Burnboy]

please i need some help

 

[Latimer]

8

 

[Burnboy]

im solving for a

 

[Burnboy]

how did you get that?

 

[HappyScrappy]

is that calculus?
looks more like algebra... but then again, it has been over 5 years since I've done any real math.

 

[doc_pup]

what exactly do you want, to solve for x or to put it in the form of y=a(x-h)^2 + K?

 

[Burnboy]

its a lgebra but its part of a math problem